After you have finished polishing the surface you get a small paint brush and paint over the area with black enamel paint, the ones in the tiny tubs for Airfix models works best.
You then give a few mins to slightly dry but definitely not harden off and rub over the surface of the bezel with a soft cloth. This will take it off the area it shouldn't cover and leave it where you want it.
Personally though I think a vintage 1655 or Daytona look fine when these areas are missing. This something I would only do with a modern watch to make it look spiffing again.
Hope this helps,
Steve
EDIT: BTW, you shouldn't use any type of soap as it leaves a residue. Only use dish-wash liquid for that squeaky clean look and nice soft hands

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